Optical characterization of CdS nanoparticles embedded into the comb-type amphiphilic graft copolymer

Research Paper

DOI: 10.1007/s11051-012-1355-x

Cite this article as:
Kalaycı, Ö.A., Duygulu, Ö. & Hazer, B. J Nanopart Res (2013) 15: 1355. doi:10.1007/s11051-012-1355-x


This study refers to the synthesis and characterization of a novel organic/inorganic hybrid nanocomposite material containing cadmium sulfide (CdS) nanoparticles. For this purpose, a series of polypropylene (PP)-g-polyethylene glycol (PEG), PP-g-PEG comb-type amphiphilic graft copolymers were synthesized. PEGs with Mn = 400, 2000, 3350, and 8000 Da were used and the graft copolymers obtained were coded as PPEG400, PPEG2000, PPEG3350, and PPEG8000. CdS nanoparticles were formed in tetrahydrofuran solution of PP-g-PEG amphiphilic comb-type copolymer by the reaction between aqueous solutions of Na2S and Cd(CH3COO)2 simultaneously. Micelle formation of PPEG2000 comb-type amphiphilic graft copolymer in both solvent/non-solvent (petroleum ether–THF) by transmission electron microscopy (TEM). The optical characteristics, size morphology, phase analysis, and dispersion of CdS nanoparticles embedded in PPEG400, PPEG2000, PPEG3350, and PPEG8000 comb-type amphiphilic graft copolymer micelles were determined by high resolution TEM (HRTEM), energy dispersive spectroscopy, UV–vis spectroscopy, and fluorescence emission spectroscopy techniques. The aggregate size of PPEG2000-CdS is between 10 and 50 nm; however, in the case of PPEG400-CdS, PPEG3350-CdS, and PPEG8000-CdS samples, it is up to approximately 100 nm. The size of CdS quantum dots in the aggregates for PPEG2000 and PPEG8000 samples was observed as 5 nm by HRTEM analysis, and this result was also supported by UV–vis absorbance spectra and fluorescence emission spectra.


Quantum dots Cadmium sulfide Comb-type amphiphilic copolymer Micelle HRTEM 

Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  • Özlem A. Kalaycı
    • 1
  • Özgür Duygulu
    • 2
  • Baki Hazer
    • 3
  1. 1.Department of PhysicsBulent Ecevit UniversityZonguldakTurkey
  2. 2.TUBITAK Marmara Research Center, Materials InstituteGebzeTurkey
  3. 3.Department of ChemistryBulent Ecevit UniversityZonguldakTurkey

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